guest ::
| Home > Publications database > Nitrogen supply affects arbuscular mycorrhizal colonization of Artemisia vulgaris in a phosphate-polluted field site |
| Home > Publications database > Nitrogen supply affects arbuscular mycorrhizal colonization of Artemisia vulgaris in a phosphate-polluted field site |
| Journal Article | PreJuSER-46188 |
; ; ; ; ; ;
2005
Wiley-Blackwell
Oxford [u.a.]
This record in other databases: 
Please use a persistent id in citations: doi:10.1111/j.1469-8137.2005.01374.x
Abstract: Root colonization by arbuscular mycorrhizal fungi (AMF) was investigated in industrially polluted grassland characterized by exceptionally high phosphorus levels (up to 120 g kg(-1) soil). Along a pollution-induced nitrogen gradient, soil and tissue element concentrations of Artemisia vulgaris plants and their mycorrhizal status were determined. Additionally, we compared mycorrhization rates and above-ground biomass of A. vulgaris at N-fertilized and control plots in the N-poor area. Despite high soil and tissue P concentrations, plants from N-deficient plots, which were characterized by low tissue N concentrations and N : P ratios, were strongly colonized by AMF, whereas at a plot with comparable P levels, but higher soil and plant N concentrations and N : P ratios, mycorrhization rates were significantly lower. Correlation analyses revealed a negative relationship between percentage root colonization of A. vulgaris by AMF and both tissue N concentration and N : P ratio. Accordingly, in the fertilization experiment, control plants had higher mycorrhization rates than N-fertilized plants, whereas the species attained higher biomass at N-fertilized plots. The results suggest that N deficiency stimulates root colonization by AMF in this extraordinarily P-rich field site.
Keyword(s): Artemisia: metabolism (MeSH) ; Artemisia: microbiology (MeSH) ; Fertilizers (MeSH) ; Mycorrhizae: metabolism (MeSH) ; Nitrogen: metabolism (MeSH) ; Phosphates: analysis (MeSH) ; Plant Roots: microbiology (MeSH) ; Soil: analysis (MeSH) ; Soil Pollutants (MeSH) ; Fertilizers ; Phosphates ; Soil ; Soil Pollutants ; Nitrogen ; J ; arbuscular mycorrhiza (auto) ; Artemisia vulgaris (auto) ; N : P ratio (auto) ; nitrogen (N) (auto) ; phosphorus (P) (auto) ; root colonization (auto)
|
The record appears in these collections: |